DXR is and will be useless for real time in the foreseeable future. Only people who can use it are RTX owners on PC, no consoles, no mobile. If you make anything that is not a promo (for a car company, archviz or whatever) or sponsored content (i.e. for Nvidia), you’re limiting yourself to a tiny portion of the market (according to Steam HW survey from JAN19, only 0.75% of Steam users have RTX cards). On the other hand, I can see using DXR for in engine ground truth renders as being very useful. Still, virtual texturing would help everyone who uses the engine and be a much bigger deal IMO.